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Finding the Fourth Proportional to 78,751.59, 118,060.35 and 34,345.23

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Solution

The fourth proportional to 78,751.59, 118,060.35 and 34,345.23 is: 51,488.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,751.59 : 118,060.35 = 34,345.23 : x
  2. Step 2: Convert to fraction form
    78,751.59/118,060.35 = 34,345.23/x
  3. Step 3: Cross multiply
    78,751.59x = 118,060.35 × 34,345.23
  4. Step 4: Simplify right side
    78,751.59x = 4,054,809,874.63
  5. Step 5: Solve for x
    x = 4,054,809,874.63/78,751.59
  6. Step 6: Final answer
    x = 51,488.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.